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' (Model.)

W. H. TAYLOR.

LOCK.

No. 415,178. Patented Nov. 12, 1889.

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UNITED STATES TARREN TAYLOR, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE PATENT OFFICE.

d: TOVNE MANUFACTURING COMPANY, OF SAME PLACE.

LOCK.

SPECIFICATION forming part of Letters Patent No. 415,178, dated November 12, 1889.

Application filed June 4, 1889.

To all whom it may concern:

Be it known that I, VARREN II. TAYLOR, of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a specification, reference being had to the accompanying drawings.

My invent-ion relates to that species of locks in which a key-hub within an escutcheoncylinder is surrounded by a rotary sleeve, and tumblers are employed with different keys adapted to set them, so that in one case the key-hub will rotate alone and in the other case the key-hub and sleeve will rotate together within the escutcheon. In such locks as heretofore made each one has been adapted to be operated by a particular key and a series of them to be operated by a masterkey. It is often desirable to provide one person with a master-key that will open all of the locks, for example, on one Iioer of a building, and another person with another master-key that will unlock all the locks, for example, on another iioor of the building, and another person with another master-key that will open all the locks in the building, While at the same time each individual lock is provided with a key which will unlock it only.

It is the object of my invention to provide a lock having the capacity of being unlocked by three or more different keys, one for use, for example, by an individual occupying a given room; another for use, for example, by a servant having charge of a given Hoor, and

a third for use, for example, by a proprietor of a hotel. I accomplish this by making the sleeve surrounding` the key-hub in this class of locks in sections and providing suitable keys for properly setting the tu mblers to work the locks. In this way the result is achieved without the necessity of making any greater number of divisions in the pin-tumblers of the locks than where the whole series of locks is set to one master-key only.

In the accompanying drawings, Figure l is a vertical longitudinal section of an escutchcon or cylinder provided with springs, pintumblers, key-hub, and sleeve, with the key in position. Fig. 2 is a similar view with a different key in place. Fig. 3 is a similar view with a still different key in place and Serial No. 313,090, (Model.)

showing the division-line between the two sections of the sleeve in a dierent position. Fig. e is a-section on the line 4L of Fig. l.

The dotted lines in Figs. l, 2, and 3 indicate different key-bittings, showing that the locks are adapted to be operated by different keys, each key being so bitted as to bring the tumblers in alignment differently, but in such a way that the key-hub alone will rotate, or else the key hub and sleeve together, or else the key-hub and one or other part of the sleeve together.

Referring to the letters upon the drawings, A indicates the key-hub; C, the rot-ary sleeve surrounding the key-hub; D, the escutcheon; E, the upper set of pin-tumblers; F, the middle set; G, the lower set, and H the tumblersprings.

The parts just referred to by letter are all of the construction heretofore known.

L indicates a second sleeve surrounding the key-hub, so that the entire sleeve is in two parts C and L.

M indicates a master-key adapted to operate the whole number of locks in a building, and N another master-key adapted to operate a part only of the whole series of locks on account of its dilferent bittings, which are adapted to set the tu mblei's differently when the key is inserted.

O indicates another masterkey adapted to operate another part of the whole series of locks on account of its different bittings, which are adapted to set the tumblers diiferently when the key is inserted.

Referring to Fig. l, it will be seen that the master-key M sets the tumblers so that there is a dividing-line between the sleeve and the escutcheon, while the sleeve is pinned to the hub, so that by turning the key the hub and sleeve will rotate together.

By referring to Fig. 2 it will be seen that the sleeve is cut so that theiirst two sets of pins are set by a suitable master-key N to fasten one section of the sleeve to the escutcheon, while the three sets of pins at the rear are set so as to fasten the other section of the sleeve to the key-hub. Consequently, by turning the key the lock can be operated, but only the rear section of the sleeve will rotate.

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the key the lock can be operated, but only the front section of the sleeve will rotate. The sleeve might, of course, be cut into more sections, and. on the same principle a greet Variety of master-keys could be used, sufcient for all practical purposes.

Vhat I claim isw In a. lock, the combination, with an es- 15 cutcheon, of a key-hub and a rotary sleeve between it and the escutcheon, in two or more sections, and suitable tumbler mechanism, substantially as set forth.

In testimony of all which I have hereunto zo subscribed my name.

WARREN H. TAYLOR. Witnesses: Y

SOHUYLER MERRITT, GEO. E. WHITE. 

